Commit Graph

588 Commits

Author SHA1 Message Date
Linus Torvalds 21d37bbc65 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (140 commits)
  ACPICA: reduce table header messages to fit within 80 columns
  asus-laptop: merge with ACPICA table update
  ACPI: bay: Convert ACPI Bay driver to be compatible with sysfs update.
  ACPI: bay: new driver is EXPERIMENTAL
  ACPI: bay: make drive_bays static
  ACPI: bay: make bay a platform driver
  ACPI: bay: remove prototype procfs code
  ACPI: bay: delete unused variable
  ACPI: bay: new driver adding removable drive bay support
  ACPI: dock: check if parent is on dock
  ACPICA: fix gcc build warnings
  Altix: Add ACPI SSDT PCI device support (hotplug)
  Altix: ACPI SSDT PCI device support
  ACPICA: reduce conflicts with Altix patch series
  ACPI_NUMA: fix HP IA64 simulator issue with extended memory domain
  ACPI: fix HP RX2600 IA64 boot
  ACPI: build fix for IBM x440 - CONFIG_X86_SUMMIT
  ACPICA: Update version to 20070126
  ACPICA: Fix for incorrect parameter passed to AcpiTbDeleteTable during table load.
  ACPICA: Update copyright to 2007.
  ...
2007-02-07 15:36:08 -08:00
Chen, Kenneth W 00b65985fb [IA64] relax per-cpu TLB requirement to DTC
Instead of pinning per-cpu TLB into a DTR, use DTC.  This will free up
one TLB entry for application, or even kernel if access pattern to
per-cpu data area has high temporal locality.

Since per-cpu is mapped at the top of region 7 address, we just need to
add special case in alt_dtlb_miss.  The physical address of per-cpu data
is already conveniently stored in IA64_KR(PER_CPU_DATA).  Latency for
alt_dtlb_miss is not affected as we can hide all the latency.  It was
measured that alt_dtlb_miss handler has 23 cycles latency before and
after the patch.

The performance effect is massive for applications that put lots of tlb
pressure on CPU.  Workload environment like database online transaction
processing or application uses tera-byte of memory would benefit the most.
Measurement with industry standard database benchmark shown an upward
of 1.6% gain.  While smaller workloads like cpu, java also showing small
improvement.

Signed-off-by: Ken Chen <kenneth.w.chen@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-02-06 15:04:48 -08:00
Chen, Kenneth W a0776ec8e9 [IA64] remove per-cpu ia64_phys_stacked_size_p8
It's not efficient to use a per-cpu variable just to store
how many physical stack register a cpu has.  Ever since the
incarnation of ia64 up till upcoming Montecito processor, that
variable has "glued" to 96. Having a variable in memory means
that the kernel is burning an extra cacheline access on every
syscall and kernel exit path.  Such "static" value is better
served with the instruction patching utility exists today.
Convert ia64_phys_stacked_size_p8 into dynamic insn patching.

This also has a pleasant side effect of eliminating access to
per-cpu area while psr.ic=0 in the kernel exit path. (fixable
for per-cpu DTC work, but why bother?)

There are some concerns with the default value that the instruc-
tion encoded in the kernel image.  It shouldn't be concerned.
The reasons are:

(1) cpu_init() is called at CPU initialization.  In there, we
    find out physical stack register size from PAL and patch
    two instructions in kernel exit code.  The code in question
    can not be executed before the patching is done.

(2) current implementation stores zero in ia64_phys_stacked_size_p8,
    and that's what the current kernel exit path loads the value with.
    With the new code, it is equivalent that we store reg size 96
    in ia64_phys_stacked_size_p8, thus creating a better safety net.
    Given (1) above can never fail, having (2) is just a bonus.

All in all, this patch allow one less memory reference in the kernel
exit path, thus reducing syscall and interrupt return latency; and
avoid polluting potential useful data in the CPU cache.

Signed-off-by: Ken Chen <kenneth.w.chen@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-02-06 15:04:18 -08:00
Jan Beulich 51099005ab [IA64] swiotlb abstraction (e.g. for Xen)
Add abstraction so that the file can be used by environments other than IA64
and EM64T, namely for Xen.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-02-05 18:53:04 -08:00
Jan Beulich cde14bbfb3 [IA64] swiotlb bug fixes
This patch fixes
- marking I-cache clean of pages DMAed to now only done for IA64
- broken multiple inclusion in include/asm-x86_64/swiotlb.h
- missing call to mark_clean in swiotlb_sync_sg()
- a (perhaps only theoretical) issue in swiotlb_dma_supported() when
io_tlb_end is exactly at the end of memory

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-02-05 18:46:40 -08:00
Fenghua Yu 86afa9eb88 [IA64] Hook up getcpu system call for IA64
getcpu system call returns cpu# and node# on which this system call and
its caller are running. This patch hooks up its implementation on IA64.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-02-05 16:56:36 -08:00
Kirill Korotaev 71120061f2 [IA64] virt_to_page() can be called with NULL arg
It does not return NULL when arg is NULL.

Signed-off-by: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Signed-off-by: Kirill Korotaev <dev@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-02-05 16:47:02 -08:00
Bob Picco 139b830477 [IA64] register memory ranges in a consistent manner
While pursuing and unrelated issue with 64Mb granules I noticed a problem
related to inconsistent use of add_active_range.  There doesn't appear any
reason to me why FLATMEM versus DISCONTIG_MEM should register memory to
add_active_range with different code.  So I've changed the code into a
common implementation.

The other subtle issue fixed by this patch was calling add_active_range in
count_node_pages before granule aligning is performed.  We were lucky with
16MB granules but not so with 64MB granules.  count_node_pages has reserved
regions filtered out and as a consequence linked kernel text and data
aren't covered by calls to count_node_pages.  So linked kernel regions
wasn't reported to add_active_regions.  This resulted in free_initmem
causing numerous bad_page reports.  This won't occur with this patch
because now all known memory regions are reported by
register_active_ranges.

Acked-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Bob Picco <bob.picco@hp.com>
Acked-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-02-05 15:07:47 -08:00
Alex Williamson f43691ef8a [IA64] remove bogus prototype ia64_esi_init()
This function doesn't exist.

Signed-off-by: Alex Williamson <alex.williamson@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-02-05 14:14:29 -08:00
bibo,mao 90f9d70a58 [IA64] enable singlestep on system call
As is pointed out in
http://www.gelato.org/community/view_linear.php?id=1_1036&from=authors&value=Ian%20Wienand#1_1039,
if single step on break instruction, the break fault has higher
priority than the single-step trap. When the break fault handler
is entered, it advances the IP by 1 instruction so break instruction
single-stepping is skipped, actually it is next instruction which
is single stepped.

This patch modifies this, it adds TIF_SINGLESTEP bit for thread
flags, and generate a fake sigtrap when single stepping break
instruction. Test case in attachment can verify this. Any comments
is welcome.

Signed-off-by: bibo, mao <bibo.mao@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-02-05 13:49:29 -08:00
John Keller 6f09a9250a Altix: ACPI SSDT PCI device support
Add SN platform support for running with an ACPI
capable PROM that defines PCI devices in SSDT
tables. There is a SSDT table for every occupied
slot on a root bus, containing info for every
PPB and/or device on the bus. The SSDTs will be
dynamically loaded/unloaded at hotplug enable/disable.

Platform specific information that is currently
passed via a SAL call, will now be passed via the
Vendor resource in the ACPI Device object(s) defined
in each SSDT.

Signed-off-by: John Keller <jpk@sgi.com>
Cc: Greg KH <greg@kroah.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-02 22:14:35 -05:00
Len Brown 647fb47dfa ACPICA: reduce conflicts with Altix patch series
Syntax only -- no functional changes.

Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-02 22:14:22 -05:00
Alexey Starikovskiy f18c5a08bf ACPICA: Allow ACPI id to be u32 instead of u8.
Allow ACPI id to be u32 instead of u8.
Requires drop of conversion tables with the acpiid as index.

Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-02 21:14:31 -05:00
Alexey Starikovskiy ad71860a17 ACPICA: minimal patch to integrate new tables into Linux
Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-02 21:14:22 -05:00
Fenghua Yu 1138b7e2d4 [IA64] Itanium MC Error Injection Tool: pal_mc_error_inject() interface
This patch implements pal_mc_error_inject() interface in kernel. Both physical
mode and virtual mode are supported.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-01-29 15:29:56 -08:00
Bartlomiej Zolnierkiewicz 677c0a78f6 ia64: add pci_get_legacy_ide_irq()
Add pci_get_legacy_ide_irq() identical to the one used by i386/x86_64.
Fixes amd74xx driver build on ia64 (bugzilla bug #6644).

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-01-27 13:46:54 +01:00
Al Viro 73f66ace34 [PATCH] fix prototype of csum_ipv6_magic() (ia64)
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-01-23 11:09:49 -08:00
Andrew Morton aae7d14f61 [PATCH] FD_ZERO build fix
unionfs managed to hit this on s390.  Some architectures use __ptr_t in their
FD_ZERO implementation.  We don't have a __ptr_t.  Switch them over to plain
old void*.

Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Josef 'Jeff' Sipek <jsipek@cs.sunysb.edu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2007-01-11 18:18:22 -08:00
Linus Torvalds 8eefb2b7ad Merge branch 'release' of master.kernel.org:/home/ftp/pub/scm/linux/kernel/git/aegl/linux-2.6
* 'release' of master.kernel.org:/home/ftp/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] Move sg_dma_{len,address} from pci.h to scatterlist.h
2006-12-13 15:57:58 -08:00
Tony Luck 7806ca89bc [IA64] Move sg_dma_{len,address} from pci.h to scatterlist.h
IA64 is in a tiny minority providing these defines in pci.h.
Almost everyone else has them in scatterlist.h

Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-12-13 13:15:10 -08:00
Ralf Baechle ec8c0446b6 [PATCH] Optimize D-cache alias handling on fork
Virtually index, physically tagged cache architectures can get away
without cache flushing when forking.  This patch adds a new cache
flushing function flush_cache_dup_mm(struct mm_struct *) which for the
moment I've implemented to do the same thing on all architectures
except on MIPS where it's a no-op.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-13 09:27:08 -08:00
Rafael J. Wysocki 8a102eed9c [PATCH] PM: Fix SMP races in the freezer
Currently, to tell a task that it should go to the refrigerator, we set the
PF_FREEZE flag for it and send a fake signal to it.  Unfortunately there
are two SMP-related problems with this approach.  First, a task running on
another CPU may be updating its flags while the freezer attempts to set
PF_FREEZE for it and this may leave the task's flags in an inconsistent
state.  Second, there is a potential race between freeze_process() and
refrigerator() in which freeze_process() running on one CPU is reading a
task's PF_FREEZE flag while refrigerator() running on another CPU has just
set PF_FROZEN for the same task and attempts to reset PF_FREEZE for it.  If
the refrigerator wins the race, freeze_process() will state that PF_FREEZE
hasn't been set for the task and will set it unnecessarily, so the task
will go to the refrigerator once again after it's been thawed.

To solve first of these problems we need to stop using PF_FREEZE to tell
tasks that they should go to the refrigerator.  Instead, we can introduce a
special TIF_*** flag and use it for this purpose, since it is allowed to
change the other tasks' TIF_*** flags and there are special calls for it.

To avoid the freeze_process()-refrigerator() race we can make
freeze_process() to always check the task's PF_FROZEN flag after it's read
its "freeze" flag.  We should also make sure that refrigerator() will
always reset the task's "freeze" flag after it's set PF_FROZEN for it.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: David Howells <dhowells@redhat.com>
Cc: Andi Kleen <ak@muc.de>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-13 09:05:49 -08:00
Tony Luck 08ed38b680 [IA64] enable trap code on slot 1
Because slot 1 of one instr bundle crosses border of two consecutive
8-bytes, kprobe on slot 1 is disabled. This patch enables kprobe on
slot1, it only replaces higher 8-bytes of the instruction bundle and
changes the exception code to ignore the low 12 bits of the break
number (which is across the border in the lower 8-bytes of the bundle).

For those instructions which must execute regardless qp bits,
kprobe on slot 1 is still disabled.

Signed-off-by: bibo,mao <bibo.mao@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-12-12 12:00:55 -08:00
Dean Nelson a460ef8d0a [IA64] fix possible XPC deadlock when disconnecting
This patch eliminates a potential deadlock that is possible when XPC
disconnects a channel to a partition that has gone down. This deadlock will
occur if at least one of the kthreads created by XPC for the purpose of making
callouts to the channel's registerer is detained in the registerer and will
not be returning back to XPC until some registerer request occurs on the now
downed partition. The potential for a deadlock is removed by ensuring that
there always is a kthread available to make the channel disconnecting callout
to the registerer.

Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-12-12 11:48:53 -08:00
Christoph Lameter 08c183f31b [PATCH] sched: add option to serialize load balancing
Large sched domains can be very expensive to scan.  Add an option SD_SERIALIZE
to the sched domain flags.  If that flag is set then we make sure that no
other such domain is being balanced.

[akpm@osdl.org: build fix]
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Cc: Peter Williams <pwil3058@bigpond.net.au>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Christoph Lameter <clameter@sgi.com>
Cc: "Siddha, Suresh B" <suresh.b.siddha@intel.com>
Cc: "Chen, Kenneth W" <kenneth.w.chen@intel.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-10 09:55:43 -08:00
Alan Cox be90038a24 [PATCH] tty: preparatory structures for termios revamp
In order to sort out our struct termios and add proper speed control we need
to separate the kernel and user termios structures.  Glibc is fine but the
other libraries rely on the kernel exported struct termios and we need to
extend this without breaking the ABI/API

To do so we add a struct ktermios which is the kernel view of a termios
structure and overlaps the struct termios with extra fields on the end for
now.  (That limitation will go away in later patches).  Some platforms (eg
alpha) planned ahead and thus use the same struct for both, others did not.

This just adds the structures but does not use them, it seems a sensible
splitting point for bisect if there are compile failures (not that I expect
them)

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-08 08:28:56 -08:00
Linus Torvalds 6ee7e78e7c Merge branch 'release' of master.kernel.org:/pub/scm/linux/kernel/git/aegl/linux-2.6
* 'release' of master.kernel.org:/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] replace kmalloc+memset with kzalloc
  [IA64] resolve name clash by renaming is_available_memory()
  [IA64] Need export for csum_ipv6_magic
  [IA64] Fix DISCONTIGMEM without VIRTUAL_MEM_MAP
  [PATCH] Add support for type argument in PAL_GET_PSTATE
  [IA64] tidy up return value of ip_fast_csum
  [IA64] implement csum_ipv6_magic for ia64.
  [IA64] More Itanium PAL spec updates
  [IA64] Update processor_info features
  [IA64] Add se bit to Processor State Parameter structure
  [IA64] Add dp bit to cache and bus check structs
  [IA64] SN: Correctly update smp_affinty mask
  [IA64] sparse cleanups
  [IA64] IA64 Kexec/kdump
2006-12-07 15:39:22 -08:00
Matthew Wilcox b0f40ea04a [IA64] Fix DISCONTIGMEM without VIRTUAL_MEM_MAP
make allnoconfig currently fails to build because it selects DISCONTIGMEM
without VIRTUAL_MEM_MAP.  I see no particular reason this combination
ought to fail, so I fixed it by:

 - Including memory_model.h in all circumstances, except when both
   DISCONTIGMEM and VIRTUAL_MEM_MAP are enabled.
 - Defining ia64_pfn_valid() to 1 unless VIRTUAL_MEM_MAP is enabled

Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-12-07 11:24:03 -08:00
Venkatesh Pallipadi 17e77b1cc3 [PATCH] Add support for type argument in PAL_GET_PSTATE
PAL_GET_PSTATE accepts a type argument to return different kinds of
frequency information.
Refer: Intel ItaniumArchitecture Software Developer's Manual -
Volume 2: System Architecture, Revision 2.2
(http://developer.intel.com/design/itanium/manuals/245318.htm)

Add the support for type argument and use Instantaneous frequency
in the acpi driver.

Also fix a bug, where in return value of PAL_GET_PSTATE was getting compared
with 'control' bits instead of 'status' bits.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-12-07 11:21:55 -08:00
Chen, Kenneth W 007d77d0c5 [IA64] implement csum_ipv6_magic for ia64.
The asm version is 4.4 times faster than the generic C version and
10X smaller in code size.

Signed-off-by: Ken Chen <kenneth.w.chen@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-12-07 11:17:26 -08:00
Russ Anderson 5b4d5681ff [IA64] More Itanium PAL spec updates
Additional updates to conform with Rev 2.2 of Volume 2 of "Intel
Itanium Architecture Software Developer's Manual" (January 2006).

Add pal_bus_features_s bits 52 & 53 (page 2:347)
Add pal_vm_info_2_s field max_purges (page 2:2:451)
Add PAL_GET_HW_POLICY call (page 2:381)
Add PAL_SET_HW_POLICY call (page 2:439)

Sample output before:
---------------------------------------------------------------------
cobra:~ # cat /proc/pal/cpu0/vm_info
Physical Address Space         : 50 bits
Virtual Address Space          : 61 bits
Protection Key Registers(PKR)  : 16
Implemented bits in PKR.key    : 24
Hash Tag ID                    : 0x2
Size of RR.rid                 : 24
Supported memory attributes    : WB, UC, UCE, WC, NaTPage
---------------------------------------------------------------------

Sample output after:
---------------------------------------------------------------------
cobra:~ # cat /proc/pal/cpu0/vm_info
Physical Address Space         : 50 bits
Virtual Address Space          : 61 bits
Protection Key Registers(PKR)  : 16
Implemented bits in PKR.key    : 24
Hash Tag ID                    : 0x2
Max Purges                     : 1
Size of RR.rid                 : 24
Supported memory attributes    : WB, UC, UCE, WC, NaTPage
---------------------------------------------------------------------

Signed-off-by: Russ Anderson (rja@sgi.com)
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-12-07 11:10:16 -08:00
Russ Anderson 6533bdedac [IA64] Add se bit to Processor State Parameter structure
Rev 2.2 of Volume 2 of "Intel Itanium Architecture Software Developer's
Manual" (January 2006) adds a se bit to the Processor State Parameter
fields (pages 2:299).  This patch gets the structs back in sync
with the spec.

Signed-off-by: Russ Anderson (rja@sgi.com)
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-12-07 11:02:53 -08:00
Russ Anderson 323cbb0991 [IA64] Add dp bit to cache and bus check structs
Rev 2.2 of Volume 2 of "Intel Itanium Architecture Software Developer's
Manual" (January 2006) adds a dp bit to the cache_check and bus_check
fields (pages 2:401-2:404).  This patch gets the structs back in sync
with the spec.

Signed-off-by: Russ Anderson (rja@sgi.com)
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-12-07 11:02:38 -08:00
Zou Nan hai a79561134f [IA64] IA64 Kexec/kdump
Changes and updates.

1. Remove fake rendz path and related code according to discuss with Khalid Aziz.
2. fc.i offset fix in relocate_kernel.S.
3. iospic shutdown code eoi and mask race fix from Fujitsu.
4. Warm boot hook in machine_kexec to SN SAL code from Jack Steiner.
5. Send slave to SAL slave loop patch from Jay Lan.
6. Kdump on non-recoverable MCA event patch from Jay Lan
7. Use CTL_UNNUMBERED in kdump_on_init sysctl.

Signed-off-by: Zou Nan hai <nanhai.zou@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-12-07 09:51:35 -08:00
Adrian Bunk 7d1362c0d0 [PATCH] cleanup asm/setup.h userspace visibility
Make the contents of the userspace asm/setup.h header consistent on all
architectures:

 - export setup.h to userspace on all architectures
 - export only COMMAND_LINE_SIZE to userspace
 - frv: move COMMAND_LINE_SIZE from param.h
 - i386: remove duplicate COMMAND_LINE_SIZE from param.h
 - arm:
   - export ATAGs to userspace
   - change u8/u16/u32 to __u8/__u16/__u32

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Acked-by: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07 08:39:46 -08:00
Ralf Baechle d3fa72e455 [PATCH] Pass struct dev pointer to dma_cache_sync()
Pass struct dev pointer to dma_cache_sync()

dma_cache_sync() is ill-designed in that it does not have a struct device
pointer argument which makes proper support for systems that consist of a
mix of coherent and non-coherent DMA devices hard.  Change dma_cache_sync
to take a struct device pointer as first argument and fix all its callers
to pass it.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07 08:39:41 -08:00
Ralf Baechle f67637ee4b [PATCH] Add struct dev pointer to dma_is_consistent()
dma_is_consistent() is ill-designed in that it does not have a struct
device pointer argument which makes proper support for systems that consist
of a mix of coherent and non-coherent DMA devices hard.  Change
dma_is_consistent to take a struct device pointer as first argument and fix
the sole caller to pass it.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07 08:39:41 -08:00
Andy Whitcroft 25ba77c141 [PATCH] numa node ids are int, page_to_nid and zone_to_nid should return int
NUMA node ids are passed as either int or unsigned int almost exclusivly
page_to_nid and zone_to_nid both return unsigned long.  This is a throw
back to when page_to_nid was a #define and was thus exposing the real type
of the page flags field.

In addition to fixing up the definitions of page_to_nid and zone_to_nid I
audited the users of these functions identifying the following incorrect
uses:

1) mm/page_alloc.c show_node() -- printk dumping the node id,
2) include/asm-ia64/pgalloc.h pgtable_quicklist_free() -- comparison
   against numa_node_id() which returns an int from cpu_to_node(), and
3) mm/mpolicy.c check_pte_range -- used as an index in node_isset which
   uses bit_set which in generic code takes an int.

Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Cc: Christoph Lameter <clameter@engr.sgi.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07 08:39:23 -08:00
Peter Zijlstra a866374aec [PATCH] mm: pagefault_{disable,enable}()
Introduce pagefault_{disable,enable}() and use these where previously we did
manual preempt increments/decrements to make the pagefault handler do the
atomic thing.

Currently they still rely on the increased preempt count, but do not rely on
the disabled preemption, this might go away in the future.

(NOTE: the extra barrier() in pagefault_disable might fix some holes on
       machines which have too many registers for their own good)

[heiko.carstens@de.ibm.com: s390 fix]
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Nick Piggin <npiggin@suse.de>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07 08:39:21 -08:00
Al Viro 322529961e [NET]: IA64 checksum annotations and cleanups.
* sanitize prototypes, annotate
* ntohs -> shift in checksum calculations
* kill access_ok() in csum_partial_copy_from_user
* collapse do_csum_partial_copy_from_user

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02 21:23:05 -08:00
Linus Torvalds 72a73a69f6 Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6: (28 commits)
  PCI: make arch/i386/pci/common.c:pci_bf_sort static
  PCI: ibmphp_pci.c: fix NULL dereference
  pciehp: remove unnecessary pci_disable_msi
  pciehp: remove unnecessary free_irq
  PCI: rpaphp: change device tree examination
  PCI: Change memory allocation for acpiphp slots
  i2c-i801: SMBus patch for Intel ICH9
  PCI: irq: irq and pci_ids patch for Intel ICH9
  PCI: pci_{enable,disable}_device() nestable ports
  PCI: switch pci_{enable,disable}_device() to be nestable
  PCI: arch/i386/kernel/pci-dma.c: ioremap balanced with iounmap
  pci/i386: style cleanups
  PCI: Block on access to temporarily unavailable pci device
  pci: fix __pci_register_driver error handling
  pci: clear osc support flags if no _OSC method
  acpiphp: fix missing acpiphp_glue_exit()
  acpiphp: fix use of list_for_each macro
  Altix: Initial ACPI support - ROM shadowing.
  Altix: SN ACPI hotplug support.
  Altix: Add initial ACPI IO support
  ...
2006-12-01 16:41:27 -08:00
Benjamin Herrenschmidt 465ae641e4 ACPI: Change ACPI to use dev_archdata instead of firmware_data
Change ACPI to use dev_archdata instead of firmware_data

This patch changes ACPI to use the new dev_archdata on i386, x86_64
and ia64 (is there any other arch using ACPI ?) to store it's
acpi_handle.

It also removes the firmware_data field from struct device as this
was the only user.

Only build-tested on x86

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Len Brown <lenb@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-12-01 14:52:01 -08:00
Benjamin Herrenschmidt c6dbaef22a Driver core: add dev_archdata to struct device
Add arch specific dev_archdata to struct device

Adds an arch specific struct dev_arch to struct device. This enables
architecture to add specific fields to every device in the system, like
DMA operation pointers, NUMA node ID, firmware specific data, etc...

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Andi Kleen <ak@suse.de>
Acked-By: David Howells <dhowells@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-12-01 14:52:01 -08:00
John Keller 8ea6091f50 Altix: Add initial ACPI IO support
First phase in introducing ACPI support to SN.
In this phase, when running with an ACPI capable PROM,
the DSDT will define the root busses and all SN nodes
(SGIHUB, SGITIO). An ACPI bus driver will be registered
for the node devices, with the acpi_pci_root_driver being
used for the root busses. An ACPI vendor descriptor is
now used to pass platform specific information for both
nodes and busses, eliminating the need for the current
SAL calls. Also, with ACPI support, SN fixup code is no longer
needed to initiate the PCI bus scans, as the acpi_pci_root_driver
does that.

However, to maintain backward compatibility with non-ACPI capable
PROMs, none of the current 'fixup' code can been deleted, though
much restructuring has been done. For example, the bulk of the code
in io_common.c is relocated code that is now common regardless
of what PROM is running, while io_acpi_init.c and io_init.c contain
routines specific to an ACPI or non ACPI capable PROM respectively.

A new pci bus fixup platform vector has been created to provide
a hook for invoking platform specific bus fixup from pcibios_fixup_bus().

The size of io_space[] has been increased to support systems with
large IO configurations.


Signed-off-by: John Keller <jpk@sgi.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-12-01 14:36:57 -08:00
Matthew Wilcox 3efe2d84c8 PCI: Use pci_generic_prep_mwi on ia64
The pci_generic_prep_mwi() code does everything that pcibios_prep_mwi()
does on ia64.  All we need to do is be sure that pci_cache_line_size
is set appropriately, and we can delete pcibios_prep_mwi().

Using SMP_CACHE_BYTES as the default was wrong on uniprocessor machines
as it is only 8 bytes.  The default in the generic code of L1_CACHE_BYTES
is at least as good.

Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Acked-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-12-01 14:36:56 -08:00
Jes Sorensen 1a4b0fc503 [PATCH] mspec driver build fix
Fix MSPEC driver to build for non SN2 enabled configs as the driver should
work in cached and uncached modes (no fetchop) on these systems.  In
addition make MSPEC select IA64_UNCACHED_ALLOCATOR, which is required for
it and move it to arch/ia64/Kconfig to avoid warnings on non ia64
architectures running allmodconfig.  Once the Kconfig code is fixed, we can
move it back.

Signed-off-by: Jes Sorensen <jes@sgi.com>
Cc: Fernando Luis Vzquez Cao <fernando@oss.ntt.co.jp>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-11-13 07:40:42 -08:00
Troy Heber fa1d19e5d9 [IA64] move SAL_CACHE_FLUSH check later in boot
The check to see if the firmware drops interrupts during a
SAL_CACHE_FLUSH is done to early in the boot. SAL_CACHE_FLUSH expects
to be able to make PAL calls in virtual mode, on some cell based
machines a fault occurs causing a MCA. This patch moves the check
after mmu_context_init so the TLB and VHPT are properly setup.

Signed-off-by Troy Heber <troy.heber@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-10-31 14:32:10 -08:00
Jes Sorensen f2454a1a4b [IA64] don't double >> PAGE_SHIFT pointer for /dev/kmem access
Don't PAGE_SHIFT pointer before handing it to virt_to_page() in
xlate_dev_kmem_ptr() as it results in a double shift.

Spotted by Bob Montgomery.

Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-10-26 14:57:06 -07:00
Bjorn Helgaas c12fb18857 [IA64] remove unused PAL_CALL_IC_OFF
Linux maps PAL instructions with an ITR, but uses a DTC for PAL data.
Section 11.10.2.1.3, "Making PAL Procedures Calls in Physical or Virtual
Mode," of the SDM (rev 2.2), says we must therefore make all PAL calls
with PSR.ic = 1 so that Linux can handle any TLB faults.

PAL_CALL_IC_OFF is currently unused, and as long as we use the ITR + DTC
strategy, we can't use it.  So remove it.  I also removed the code in
ia64_pal_call_static() that conditionally cleared PSR.ic.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-10-17 14:53:52 -07:00
Aron Griffis ffc45571df [IA64] move ioremap/ioremap_nocache under __KERNEL__
I noticed these are declared extern outside of __KERNEL__, but surely
they wouldn't be available to userland since they're defined in
ioremap.c.  Am I missing something here?

If I'm right about this, then there's probably a good deal of other
stuff in io.h that could move inside __KERNEL__, but at least this is
a start.

Signed-off-by: Aron Griffis <aron@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-10-17 14:49:15 -07:00
Al Viro a9f627c9df [PATCH] ia64/sn __iomem annotations
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-10 15:37:22 -07:00
Al Viro 5dcded1b0b [PATCH] missed ia64 pt_regs fixes
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-08 12:32:36 -07:00
David Howells 7d12e780e0 IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.

The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around.  On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).

Where appropriate, an arch may override the generic storage facility and do
something different with the variable.  On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.

Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions.  Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller.  A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.

I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.

This will affect all archs.  Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

	struct pt_regs *old_regs = set_irq_regs(regs);

And put the old one back at the end:

	set_irq_regs(old_regs);

Don't pass regs through to generic_handle_irq() or __do_IRQ().

In timer_interrupt(), this sort of change will be necessary:

	-	update_process_times(user_mode(regs));
	-	profile_tick(CPU_PROFILING, regs);
	+	update_process_times(user_mode(get_irq_regs()));
	+	profile_tick(CPU_PROFILING);

I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().

Some notes on the interrupt handling in the drivers:

 (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
     the input_dev struct.

 (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
     something different depending on whether it's been supplied with a regs
     pointer or not.

 (*) Various IRQ handler function pointers have been moved to type
     irq_handler_t.

Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 15:10:12 +01:00
Eric W. Biederman 3b7d1921f4 [PATCH] msi: refactor and move the msi irq_chip into the arch code
It turns out msi_ops was simply not enough to abstract the architecture
specific details of msi.  So I have moved the resposibility of constructing
the struct irq_chip to the architectures, and have two architecture specific
functions arch_setup_msi_irq, and arch_teardown_msi_irq.

For simple architectures those functions can do all of the work.  For
architectures with platform dependencies they can call into the appropriate
platform code.

With this msi.c is finally free of assuming you have an apic, and this
actually takes less code.

The helpers for the architecture specific code are declared in the linux/msi.h
to keep them separate from the msi functions used by drivers in linux/pci.h

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Andi Kleen <ak@suse.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Greg KH <greg@kroah.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04 07:55:29 -07:00
Siddha, Suresh B 1a84887080 [PATCH] sched: introduce child field in sched_domain
Introduce the child field in sched_domain struct and use it in
sched_balance_self().

We will also use this field in cleaning up the sched group cpu_power
setup(done in a different patch) code.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Paul Jackson <pj@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-03 08:04:06 -07:00
Arnd Bergmann 3db03b4afb [PATCH] rename the provided execve functions to kernel_execve
Some architectures provide an execve function that does not set errno, but
instead returns the result code directly.  Rename these to kernel_execve to
get the right semantics there.  Moreover, there is no reasone for any of these
architectures to still provide __KERNEL_SYSCALLS__ or _syscallN macros, so
remove these right away.

[akpm@osdl.org: build fix]
[bunk@stusta.de: build fix]
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Andi Kleen <ak@muc.de>
Acked-by: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Ian Molton <spyro@f2s.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Hirokazu Takata <takata.hirokazu@renesas.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp>
Cc: Richard Curnow <rc@rc0.org.uk>
Cc: William Lee Irwin III <wli@holomorphy.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: Miles Bader <uclinux-v850@lsi.nec.co.jp>
Cc: Chris Zankel <chris@zankel.net>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-02 07:57:23 -07:00
Ananth N Mavinakayanahalli b3f827cb0f [PATCH] Add regs_return_value() helper
Add the regs_return_value() macro to extract the return value in an
architecture agnostic manner, given the pt_regs.

Other architecture maintainers may want to add similar helpers.

Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-02 07:57:16 -07:00
Martin Schwidefsky ef6edc9746 [PATCH] Directed yield: cpu_relax variants for spinlocks and rw-locks
On systems running with virtual cpus there is optimization potential in
regard to spinlocks and rw-locks.  If the virtual cpu that has taken a lock
is known to a cpu that wants to acquire the same lock it is beneficial to
yield the timeslice of the virtual cpu in favour of the cpu that has the
lock (directed yield).

With CONFIG_PREEMPT="n" this can be implemented by the architecture without
common code changes.  Powerpc already does this.

With CONFIG_PREEMPT="y" the lock loops are coded with _raw_spin_trylock,
_raw_read_trylock and _raw_write_trylock in kernel/spinlock.c.  If the lock
could not be taken cpu_relax is called.  A directed yield is not possible
because cpu_relax doesn't know anything about the lock.  To be able to
yield the lock in favour of the current lock holder variants of cpu_relax
for spinlocks and rw-locks are needed.  The new _raw_spin_relax,
_raw_read_relax and _raw_write_relax primitives differ from cpu_relax
insofar that they have an argument: a pointer to the lock structure.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-01 00:39:21 -07:00
Linus Torvalds cdb8355add Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] minor reformatting to vmlinux.lds.S
  [IA64] CMC/CPE: Reverse the order of fetching log and checking poll threshold
  [IA64] PAL calls need physical mode, stacked
  [IA64] ar.fpsr not set on MCA/INIT kernel entry
  [IA64] printing support for MCA/INIT
  [IA64] trim output of show_mem()
  [IA64] show_mem() printk levels
  [IA64] Make gp value point to Region 5 in mca handler
  Revert "[IA64] Unwire set/get_robust_list"
  [IA64] Implement futex primitives
  [IA64-SGI] Do not request DMA memory for BTE
  [IA64] Move perfmon tables from thread_struct to pfm_context
  [IA64] Add interface so modules can discover whether multithreading is on.
  [IA64] kprobes: fixup the pagefault exception caused by probehandlers
  [IA64] kprobe opcode 16 bytes alignment on IA64
  [IA64] esi-support
  [IA64] Add "model name" to /proc/cpuinfo
2006-09-27 10:53:30 -07:00
Mel Gorman 05e0caad3b [PATCH] Have ia64 use add_active_range() and free_area_init_nodes
Size zones and holes in an architecture independent manner for ia64.

[bob.picco@hp.com: fix ia64 FLATMEM+VIRTUAL_MEM_MAP]
Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Bob Picco <bob.picco@hp.com>
Cc: Dave Hansen <haveblue@us.ibm.com>
Cc: Andy Whitcroft <apw@shadowen.org>
Cc: Andi Kleen <ak@muc.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: "Keith Mannthey" <kmannth@gmail.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Yasunori Goto <y-goto@jp.fujitsu.com>
Signed-off-by: Bob Picco <bob.picco@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-27 08:26:11 -07:00
KAMEZAWA Hiroyuki bbf2bef9f5 [PATCH] fix "cpu to node relationship fixup: map cpu to node"
Fix build error introduced by 3212fe1594

Non-NUMA case should be handled.

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-27 08:26:08 -07:00
Russ Anderson b29e7132b5 [IA64] PAL calls need physical mode, stacked
PAL_CACHE_READ and PAL_CACHE_WRITE need to be called in physical
mode with stacked registers.

Signed-off-by: Russ Anderson (rja@sgi.com)
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-09-26 15:21:11 -07:00
Zou Nan hai f5a3f3dc18 [IA64] Make gp value point to Region 5 in mca handler
MCA dispatch code take physical address of GP passed from SAL, then call
DATA_PA_TO_VA twice on GP before call into C code.  The first time is
in ia64_set_kernel_register, the second time is in VIRTUAL_MODE_ENTER.
The gp is changed to a virtual address in region 7 because DATA_PA_TO_VA
is implemented by dep instruction.

However when notify blocks were called from MCA handler code, because
notify blocks are supported by callback function pointers, gp value
value was switched to region 5 again.

The patch set gp register to kernel gp of region 5 at entry of MCA
dispatch.

Signed-off-by: Zou Nan hai <nanhai.zou@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-09-26 14:13:03 -07:00
Tony Luck 5c55cd63a7 Revert "[IA64] Unwire set/get_robust_list"
This reverts commit 2636255488.

Jakub Jelinek provided the missing futex_atomic_cmpxchg_inatomic()
function, so now it should be safe to re-enable these syscalls.

Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-09-26 14:04:42 -07:00
Jakub Jelinek a192dc1600 [IA64] Implement futex primitives
Implement futex_atomic_op_inuser() and futex_atomic_cmpxchg_inatomic()
on IA64 in order to fully support all futex functionality.

Signed-off-by: Jakub Jelinek <jakub@redhat.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-09-26 14:00:56 -07:00
Linus Torvalds b278240839 Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6
* 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6: (225 commits)
  [PATCH] Don't set calgary iommu as default y
  [PATCH] i386/x86-64: New Intel feature flags
  [PATCH] x86: Add a cumulative thermal throttle event counter.
  [PATCH] i386: Make the jiffies compares use the 64bit safe macros.
  [PATCH] x86: Refactor thermal throttle processing
  [PATCH] Add 64bit jiffies compares (for use with get_jiffies_64)
  [PATCH] Fix unwinder warning in traps.c
  [PATCH] x86: Allow disabling early pci scans with pci=noearly or disallowing conf1
  [PATCH] x86: Move direct PCI scanning functions out of line
  [PATCH] i386/x86-64: Make all early PCI scans dependent on CONFIG_PCI
  [PATCH] Don't leak NT bit into next task
  [PATCH] i386/x86-64: Work around gcc bug with noreturn functions in unwinder
  [PATCH] Fix some broken white space in ia32_signal.c
  [PATCH] Initialize argument registers for 32bit signal handlers.
  [PATCH] Remove all traces of signal number conversion
  [PATCH] Don't synchronize time reading on single core AMD systems
  [PATCH] Remove outdated comment in x86-64 mmconfig code
  [PATCH] Use string instructions for Core2 copy/clear
  [PATCH] x86: - restore i8259A eoi status on resume
  [PATCH] i386: Split multi-line printk in oops output.
  ...
2006-09-26 13:07:55 -07:00
Keshavamurthy Anil S 35589a8fa8 [IA64] Move perfmon tables from thread_struct to pfm_context
This patch renders thread_struct->pmcs[] and thread_struct->pmds[]
OBSOLETE. The actual table is moved to pfm_context structure which
saves space in thread_struct (in turn saving space in task_struct
which frees up more space for kernel stacks).

Signed-off-by: Stephane Eranian <eranian@hpl.hp.com>
Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-09-26 12:03:13 -07:00
Stephane Eranian dd562c0541 [IA64] Add interface so modules can discover whether multithreading is on.
Add is_multithreading_enabled() to check whether multi-threading
is enabled independently of which cpu is currently online

Signed-off-by: stephane eranian <eranian@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-09-26 11:39:38 -07:00
bibo mao 214ddde2f9 [IA64] kprobe opcode 16 bytes alignment on IA64
On IA64 instruction opcode must be 16 bytes alignment, in kprobe structure
there is one element to save original instruction, currently saved opcode
is not statically allocated in kprobe structure, that can not assure
16 bytes alignment. This patch dynamically allocated kprobe instruction
opcode to assure 16 bytes alignment.

Signed-off-by: bibo mao <bibo.mao@intel.com>
Acked-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-09-26 11:20:37 -07:00
Tony Luck a4b47ab946 Pull esi-support into release branch 2006-09-26 09:47:30 -07:00
Tony Luck ae3e021862 Pull model-name into release branch 2006-09-26 09:47:04 -07:00
Andrew Morton a3bc0dbc81 [PATCH] smp_call_function_single() cleanup
If we're going to implement smp_call_function_single() on three architecture
with the same prototype then it should have a declaration in a
non-arch-specific header file.

Move it into <linux/smp.h>.

Cc: Stephane Eranian <eranian@hpl.hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-26 08:48:56 -07:00
Dave McCracken 46a82b2d55 [PATCH] Standardize pxx_page macros
One of the changes necessary for shared page tables is to standardize the
pxx_page macros.  pte_page and pmd_page have always returned the struct
page associated with their entry, while pte_page_kernel and pmd_page_kernel
have returned the kernel virtual address.  pud_page and pgd_page, on the
other hand, return the kernel virtual address.

Shared page tables needs pud_page and pgd_page to return the actual page
structures.  There are very few actual users of these functions, so it is
simple to standardize their usage.

Since this is basic cleanup, I am submitting these changes as a standalone
patch.  Per Hugh Dickins' comments about it, I am also changing the
pxx_page_kernel macros to pxx_page_vaddr to clarify their meaning.

Signed-off-by: Dave McCracken <dmccr@us.ibm.com>
Cc: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-26 08:48:51 -07:00
Andi Kleen 1bb4996bce [PATCH] Move compiler check for modules to ia64 only
Apparently IA64 needs it, but i386/x86-64 don't anymore
since gcc 2.95 support was dropped.  Nobody else on linux-arch
requested keeping it generically

Cc: tony.luck@intel.com
Cc: kaos@sgi.com

Signed-off-by: Andi Kleen <ak@suse.de>
2006-09-26 10:52:37 +02:00
KAMEZAWA Hiroyuki 3212fe1594 [PATCH] cpu to node relationship fixup: map cpu to node
Assume that a cpu is *physically* offlined at boot time...

Because smpboot.c::smp_boot_cpu_map() canoot find cpu's sapicid,
numa.c::build_cpu_to_node_map() cannot build cpu<->node map for
offlined cpu.

For such cpus, cpu_to_node map should be fixed at cpu-hot-add.
This mapping should be done before cpu onlining.

This patch also handles cpu hotremove case.

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-25 17:38:36 -07:00
Jeff Garzik a6d967a485 [libata] No need for all those arch libata-portmap.h headers
They all contain the same thing.  Instead, have a single generic one in
include/asm-generic, and permit an arch to override as needed.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-25 15:33:09 -04:00
Jeff Garzik 23930fa1ce Merge branch 'master' into upstream 2006-09-24 01:52:47 -04:00
David Woodhouse fadcfa33b6 [HEADERS] One line per header in Kbuild files to reduce conflicts
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-09-19 12:43:58 +01:00
Jeff Garzik 4a3381feb8 Merge branch 'master' into upstream 2006-09-19 00:42:13 -04:00
David Woodhouse d5759641f5 [PATCH] Fix 'make headers_check' on ia64
On Tue, 2006-09-12 at 17:44 +0100, David Woodhouse wrote:
> asm-ia64/ptrace.h requires asm/asm-offsets.h, which does not exist
> asm-ia64/resource.h requires asm/ustack.h, which does not exist

Hide parts which shouldn't be visible to userspace.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-16 12:54:32 -07:00
Jeff Garzik 97148ba223 Merge branch 'master' into upstream 2006-09-12 12:03:21 -04:00
Andreas Schwab 2636255488 [IA64] Unwire set/get_robust_list
The syscalls set/get_robust_list must not be wired up until
futex_atomic_cmpxchg_inatomic is implemented.  Otherwise the kernel will
hang in handle_futex_death.

Signed-off-by: Andreas Schwab <schwab@suse.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-09-08 11:03:40 -07:00
Kirill Korotaev 3a45975681 [PATCH] IA64,sparc: local DoS with corrupted ELFs
This prevents cross-region mappings on IA64 and SPARC which could lead
to system crash.  They were correctly trapped for normal mmap() calls,
but not for the kernel internal calls generated by executable loading.

This code just moves the architecture-specific cross-region checks into
an arch-specific "arch_mmap_check()" macro, and defines that for the
architectures that needed it (ia64, sparc and sparc64).

Architectures that don't have any special requirements can just ignore
the new cross-region check, since the mmap() code will just notice on
its own when the macro isn't defined.

Signed-off-by: Pavel Emelianov <xemul@openvz.org>
Signed-off-by: Kirill Korotaev <dev@openvz.org>
Acked-by: David Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
[ Cleaned up to not affect architectures that don't need it ]
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-08 08:40:46 -07:00
Jeff Garzik f9bcda7760 Merge branch 'master' into upstream 2006-09-04 06:41:37 -04:00
Russ Anderson 986e12fa74 [IA64] remove redundant local_irq_save() calls from sn_sal.h
sn_change_memprotect() does a local_irq_save() then calls
ia64_sal_oemcall_nolock() which calls SAL_CALL_NOLOCK()
which also does a local_irq_save().

This patch removes the redundant local_irq_save() and local_irq_restore()
calls in sn_change_memprotect() and sn_inject_error().

Signed-off-by: Russ Anderson <rja@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-08-29 10:17:21 -07:00
Alan Cox 2ec7df0457 [PATCH] libata: rework legacy handling to remove much of the cruft
Kill host_set->next
Fix simplex support
Allow per platform setting of IDE legacy bases

Some of this can be tidied further later on, in particular all the
legacy port gunge belongs as a PCI quirk/PCI header decode to understand
the special legacy IDE rules in the PCI spec.

Longer term Jeff also wants to move the request_irq/free_irq out of core
which will make this even cleaner.

tj: folded in three followup patches - ata_piix-fix, broken-arch-fix
and fix-new-legacy-handling, and separated per-dev xfermask into
separate patch preceding this one.  Folded in fixes are...

* ata_piix-fix: fix build failure due to host_set->next removal
* broken-arch-fix: add missing include/asm-*/libata-portmap.h
* fix-new-legacy-handling:
	* In ata_pci_init_legacy_port(), probe_num was incorrectly
          incremented during initialization of the secondary port and
          probe_ent->n_ports was incorrectly fixed to 1.

	* Both legacy ports ended up having the same hard_port_no.

	* When printing port information, both legacy ports printed
	  the first irq.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Tejun Heo <htejun@gmail.com>
2006-08-10 16:59:10 +09:00
Dean Nelson 7682a4c624 [IA64-SGI] Silent data corruption caused by XPC V2.
Jack Steiner identified a problem where XPC can cause a silent
data corruption.  On module load, the placement may cause the
xpc_remote_copy_buffer to span two physical pages.  DMA transfers are
done to the start virtual address translated to physical.

This patch changes the buffer from a statically allocated buffer to a
kmalloc'd buffer.  Dean Nelson reviewed this before posting.  I have
tested it in the configuration that was showing the memory corruption
and verified it works.  I also added a BUG_ON statement to help catch
this if a similar situation is encountered.

Signed-off-by: Robin Holt <holt@sgi.com>
Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-08-08 13:28:52 -07:00
Linus Torvalds c31ca59e25 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] fix show_mem for VIRTUAL_MEM_MAP+FLATMEM
  [IA64] align high endpoint of VIRTUAL_MEM_MAP
  [PATCH] Fix RAID5 + IA64 compile
  [IA64] Don't alloc empty frame in ia64_switch_mode_phys
  [IA64] Do not assume output registers be reservered.
  [IA64] add platform check to snsc driver init
  [IA64] sparse cleanups
  [IA64] Fix breakage in simscsi.c
  [IA64] Format /proc/pal/*/version_info correctly
2006-08-03 12:50:20 -07:00
Bob Picco e44e41d0c8 [IA64] fix show_mem for VIRTUAL_MEM_MAP+FLATMEM
contig.c (FLATMEM) requires the same optimization as in discontig.c for show_mem
when VIRTUAL_MEM_MAP is in use. Otherwise FLATMEM has softlockup timeouts.
This was boot tested for memory configuration: SPARSEMEM,
DISCONTIG+VIRTUAL_MEM_MAP, FLATMEM, FLATMEM+VIRTUAL_MEM_MAP and
FLATMEM+VIRTUAL_MEM_MAP with largest memory gap less than LARGE_GAP by
using boot parameter "mem=".

This was boot tested and "echo m >/proc/sysrq-trigger" output evaluated for
: FLATMEM, FLATMEM+VIRTUAL_MEM_MAP, DISCONTIGMEM+VIRTUAL_MEM_MAP and
SPARSEMEM.

Signed-off-by: Bob Picco <bob.picco@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-08-03 10:13:23 -07:00
Keith Owens e037cda559 [IA64] sparse cleanups
Fix some sparse warnings on ia64.  Large constants that should be long
instead of int.  Use NULL instead of 0.  Add some missing __iomem
casts.  Replace a non-C99 structure assignment.

Signed-off-by: Keith Owens <kaos@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-08-02 16:03:44 -07:00
bibo, mao a9ad965ea9 [PATCH] IA64: kprobe invalidate icache of jump buffer
Kprobe inserts breakpoint instruction in probepoint and then jumps to
instruction slot when breakpoint is hit, the instruction slot icache must
be consistent with dcache.  Here is the patch which invalidates instruction
slot icache area.

Without this patch, in some machines there will be fault when executing
instruction slot where icache content is inconsistent with dcache.

Signed-off-by: bibo,mao <bibo.mao@intel.com>
Acked-by: "Luck, Tony" <tony.luck@intel.com>
Acked-by: Keshavamurthy Anil S <anil.s.keshavamurthy@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-31 13:28:38 -07:00
Matthew Wilcox 1bf1eba74e [IA64] Format /proc/pal/*/version_info correctly
/proc/pal/*/version_info is a bit confusing.  HP firmware, at least,
reports 07.31 instead of 0.7.31.  Also, the comment is out of place;
it's an internal detail about the implementation of ia64_pal_version.
Since the 2.2 revision of the SDM still states that PAL_VERSION can
be called in virtual mode, correct the comment to be more accurate.

Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-07-31 11:49:13 -07:00
Steven Rostedt 52393ccc0a [PATCH] remove set_wmb - arch removal
set_wmb should not be used in the kernel because it just confuses the
code more and has no benefit.  Since it is not currently used in the
kernel this patch removes it so that new code does not include it.

All archs define set_wmb(var, value) to do { var = value; wmb(); }
while(0) except ia64 and sparc which use a mb() instead.  But this is
still moot since it is not used anyway.

Hasn't been tested on any archs but x86 and x86_64 (and only compiled
tested)

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-14 21:56:14 -07:00
Lennert Buytenhek 06c67befee [PATCH] make valid_mmap_phys_addr_range() take a pfn
Newer ARMs have a 40 bit physical address space, but mapping physical
memory above 4G needs a special page table format which we (currently?) do
not use for userspace mappings, so what happens instead is that mapping an
address >= 4G will happily discard the upper bits and wrap.

There is a valid_mmap_phys_addr_range() arch hook where we could check for
>= 4G addresses and deny the mapping, but this hook takes an unsigned long
address:

	static inline int valid_mmap_phys_addr_range(unsigned long addr, size_t size);

And drivers/char/mem.c:mmap_mem() calls it like this:

	static int mmap_mem(struct file * file, struct vm_area_struct * vma)
	{
		size_t size = vma->vm_end - vma->vm_start;

		if (!valid_mmap_phys_addr_range(vma->vm_pgoff << PAGE_SHIFT, size))

So that's not much help either.

This patch makes the hook take a pfn instead of a phys address.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-10 13:24:25 -07:00
Linus Torvalds 6fa0cb1141 Merge git://git.infradead.org/hdrinstall-2.6
* git://git.infradead.org/hdrinstall-2.6:
  Remove export of include/linux/isdn/tpam.h
  Remove <linux/i2c-id.h> and <linux/i2c-algo-ite.h> from userspace export
  Restrict headers exported to userspace for SPARC and SPARC64
  Add empty Kbuild files for 'make headers_install' in remaining arches.
  Add Kbuild file for Alpha 'make headers_install'
  Add Kbuild file for SPARC 'make headers_install'
  Add Kbuild file for IA64 'make headers_install'
  Add Kbuild file for S390 'make headers_install'
  Add Kbuild file for i386 'make headers_install'
  Add Kbuild file for x86_64 'make headers_install'
  Add Kbuild file for PowerPC 'make headers_install'
  Add generic Kbuild files for 'make headers_install'
  Basic implementation of 'make headers_check'
  Basic implementation of 'make headers_install'
2006-07-04 12:55:45 -07:00
Ingo Molnar 36c8b58689 [PATCH] sched: cleanup, remove task_t, convert to struct task_struct
cleanup: remove task_t and convert all the uses to struct task_struct. I
introduced it for the scheduler anno and it was a mistake.

Conversion was mostly scripted, the result was reviewed and all
secondary whitespace and style impact (if any) was fixed up by hand.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-03 15:27:11 -07:00
Ingo Molnar 61f4c3d6db [PATCH] lockdep: remove RWSEM_DEBUG remnants
RWSEM_DEBUG used to be a printk based 'tracing' facility, probably used for
very early prototypes of the rwsem code.  Remove it.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-03 15:27:01 -07:00
Ingo Molnar a875a69f8b [PATCH] lockdep: add per_cpu_offset()
Add the per_cpu_offset() generic method. (used by the lock validator)

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-03 15:27:00 -07:00
Andrew Morton dada0769b9 [PATCH] genirq ia64 cleanup
Remove duplicate/redundant/wrong  IRQF_PERCPU definition.

Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-03 15:26:58 -07:00
Thomas Gleixner 121a4226e8 [PATCH] irq-flags: IA64: Use the new IRQF_ constants
Use the new IRQF_ constants and remove the SA_INTERRUPT define

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-02 13:58:47 -07:00
Adrian Bunk 80f7228b59 typo fixes: occuring -> occurring
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-06-30 18:27:16 +02:00
Catherine Zhang 877ce7c1b3 [AF_UNIX]: Datagram getpeersec
This patch implements an API whereby an application can determine the
label of its peer's Unix datagram sockets via the auxiliary data mechanism of
recvmsg.

Patch purpose:

This patch enables a security-aware application to retrieve the
security context of the peer of a Unix datagram socket.  The application
can then use this security context to determine the security context for
processing on behalf of the peer who sent the packet.

Patch design and implementation:

The design and implementation is very similar to the UDP case for INET
sockets.  Basically we build upon the existing Unix domain socket API for
retrieving user credentials.  Linux offers the API for obtaining user
credentials via ancillary messages (i.e., out of band/control messages
that are bundled together with a normal message).  To retrieve the security
context, the application first indicates to the kernel such desire by
setting the SO_PASSSEC option via getsockopt.  Then the application
retrieves the security context using the auxiliary data mechanism.

An example server application for Unix datagram socket should look like this:

toggle = 1;
toggle_len = sizeof(toggle);

setsockopt(sockfd, SOL_SOCKET, SO_PASSSEC, &toggle, &toggle_len);
recvmsg(sockfd, &msg_hdr, 0);
if (msg_hdr.msg_controllen > sizeof(struct cmsghdr)) {
    cmsg_hdr = CMSG_FIRSTHDR(&msg_hdr);
    if (cmsg_hdr->cmsg_len <= CMSG_LEN(sizeof(scontext)) &&
        cmsg_hdr->cmsg_level == SOL_SOCKET &&
        cmsg_hdr->cmsg_type == SCM_SECURITY) {
        memcpy(&scontext, CMSG_DATA(cmsg_hdr), sizeof(scontext));
    }
}

sock_setsockopt is enhanced with a new socket option SOCK_PASSSEC to allow
a server socket to receive security context of the peer.

Testing:

We have tested the patch by setting up Unix datagram client and server
applications.  We verified that the server can retrieve the security context
using the auxiliary data mechanism of recvmsg.

Signed-off-by: Catherine Zhang <cxzhang@watson.ibm.com>
Acked-by: Acked-by: James Morris <jmorris@namei.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-29 16:58:06 -07:00
Ingo Molnar c0ad90a32f [PATCH] genirq: add ->retrigger() irq op to consolidate hw_irq_resend()
Add ->retrigger() irq op to consolidate hw_irq_resend() implementations.
(Most architectures had it defined to NOP anyway.)

NOTE: ia64 needs testing. i386 and x86_64 tested.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-29 10:26:23 -07:00
Ingo Molnar 0d7012a968 [PATCH] genirq: cleanup: turn ARCH_HAS_IRQ_PER_CPU into CONFIG_IRQ_PER_CPU
Cleanup: change ARCH_HAS_IRQ_PER_CPU into a Kconfig method.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-29 10:26:23 -07:00
Jack Steiner 9d56d878ae [IA64-SGI] - Pass OS logical cpu number to the SN prom (bios)
Pass the OS logical cpu number to the PROM. This allows PROM
to log the OS logical cpu number in error records viewed thru POD.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-06-28 09:56:55 -07:00
Siddha, Suresh B 5c45bf279d [PATCH] sched: mc/smt power savings sched policy
sysfs entries 'sched_mc_power_savings' and 'sched_smt_power_savings' in
/sys/devices/system/cpu/ control the MC/SMT power savings policy for the
scheduler.

Based on the values (1-enable, 0-disable) for these controls, sched groups
cpu power will be determined for different domains.  When power savings
policy is enabled and under light load conditions, scheduler will minimize
the physical packages/cpu cores carrying the load and thus conserving
power(with a perf impact based on the workload characteristics...  see OLS
2005 CMP kernel scheduler paper for more details..)

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Con Kolivas <kernel@kolivas.org>
Cc: "Chen, Kenneth W" <kenneth.w.chen@intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-27 17:32:45 -07:00
Yasunori Goto 7049027c6f [PATCH] pgdat allocation and update for ia64 of memory hotplug: update pgdat address array
This is to refresh node_data[] array for ia64.  As I mentioned previous
patches, ia64 has copies of information of pgdat address array on each node as
per node data.

At v2 of node_add, this function used stop_machine_run() to update them.  (I
wished that they were copied safety as much as possible.) But, in this patch,
this arrays are just copied simply, and set node_online_map bit after
completion of pgdat initialization.

So, kernel must touch NODE_DATA() macro after checking node_online_map().
(Current code has already done it.) This is more simple way for just
hot-add.....

Note : It will be problem when hot-remove will occur,
       because, even if online_map bit is set, kernel may
       touch NODE_DATA() due to race condition. :-(

Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-27 17:32:37 -07:00
Linus Torvalds 81a07d7588 Merge branch 'x86-64'
* x86-64: (83 commits)
  [PATCH] x86_64: x86_64 stack usage debugging
  [PATCH] x86_64: (resend) x86_64 stack overflow debugging
  [PATCH] x86_64: msi_apic.c build fix
  [PATCH] x86_64: i386/x86-64 Add nmi watchdog support for new Intel CPUs
  [PATCH] x86_64: Avoid broadcasting NMI IPIs
  [PATCH] x86_64: fix apic error on bootup
  [PATCH] x86_64: enlarge window for stack growth
  [PATCH] x86_64: Minor string functions optimizations
  [PATCH] x86_64: Move export symbols to their C functions
  [PATCH] x86_64: Standardize i386/x86_64 handling of NMI_VECTOR
  [PATCH] x86_64: Fix modular pc speaker
  [PATCH] x86_64: remove sys32_ni_syscall()
  [PATCH] x86_64: Do not use -ffunction-sections for modules
  [PATCH] x86_64: Add cpu_relax to apic_wait_icr_idle
  [PATCH] x86_64: adjust kstack_depth_to_print default
  [PATCH] i386/x86-64: adjust /proc/interrupts column headings
  [PATCH] x86_64: Fix race in cpu_local_* on preemptible kernels
  [PATCH] x86_64: Fix fast check in safe_smp_processor_id
  [PATCH] x86_64: x86_64 setup.c - printing cmp related boottime information
  [PATCH] i386/x86-64/ia64: Move polling flag into thread_info_status
  ...

Manual resolve of trivial conflict in arch/i386/kernel/Makefile
2006-06-26 10:51:09 -07:00
Andi Kleen 495ab9c045 [PATCH] i386/x86-64/ia64: Move polling flag into thread_info_status
During some profiling I noticed that default_idle causes a lot of
memory traffic. I think that is caused by the atomic operations
to clear/set the polling flag in thread_info. There is actually
no reason to make this atomic - only the idle thread does it
to itself, other CPUs only read it. So I moved it into ti->status.

Converted i386/x86-64/ia64 for now because that was the easiest
way to fix ACPI which also manipulates these flags in its idle
function.

Cc: Nick Piggin <npiggin@novell.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26 10:48:21 -07:00
Anil S Keshavamurthy e6f47f978b [PATCH] Notify page fault call chain
With this patch Kprobes now registers for page fault notifications only when
their is an active probe registered.  Once all the active probes are
unregistered their is no need to be notified of page faults and kprobes
unregisters itself from the page fault notifications.  Hence we will have ZERO
side effects when no probes are active.

Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26 09:58:22 -07:00
Anil S Keshavamurthy ae9a5b8565 [PATCH] Notify page fault call chain for ia64
Overloading of page fault notification with the notify_die() has performance
issues(since the only interested components for page fault is kprobes and/or
kdb) and hence this patch introduces the new notifier call chain exclusively
for page fault notifications their by avoiding notifying unnecessary
components in the do_page_fault() code path.

Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26 09:58:22 -07:00
Paul Mackerras bfe5d83419 [PATCH] Define __raw_get_cpu_var and use it
There are several instances of per_cpu(foo, raw_smp_processor_id()), which
is semantically equivalent to __get_cpu_var(foo) but without the warning
that smp_processor_id() can give if CONFIG_DEBUG_PREEMPT is enabled.  For
those architectures with optimized per-cpu implementations, namely ia64,
powerpc, s390, sparc64 and x86_64, per_cpu() turns into more and slower
code than __get_cpu_var(), so it would be preferable to use __get_cpu_var
on those platforms.

This defines a __raw_get_cpu_var(x) macro which turns into per_cpu(x,
raw_smp_processor_id()) on architectures that use the generic per-cpu
implementation, and turns into __get_cpu_var(x) on the architectures that
have an optimized per-cpu implementation.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-25 10:01:01 -07:00
Tony Luck 8cf60e04a1 Auto-update from upstream 2006-06-23 13:46:23 -07:00
Christoph Lameter 742755a1d8 [PATCH] page migration: sys_move_pages(): support moving of individual pages
move_pages() is used to move individual pages of a process. The function can
be used to determine the location of pages and to move them onto the desired
node. move_pages() returns status information for each page.

long move_pages(pid, number_of_pages_to_move,
		addresses_of_pages[],
		nodes[] or NULL,
		status[],
		flags);

The addresses of pages is an array of void * pointing to the
pages to be moved.

The nodes array contains the node numbers that the pages should be moved
to. If a NULL is passed instead of an array then no pages are moved but
the status array is updated. The status request may be used to determine
the page state before issuing another move_pages() to move pages.

The status array will contain the state of all individual page migration
attempts when the function terminates. The status array is only valid if
move_pages() completed successfullly.

Possible page states in status[]:

0..MAX_NUMNODES	The page is now on the indicated node.

-ENOENT		Page is not present

-EACCES		Page is mapped by multiple processes and can only
		be moved if MPOL_MF_MOVE_ALL is specified.

-EPERM		The page has been mlocked by a process/driver and
		cannot be moved.

-EBUSY		Page is busy and cannot be moved. Try again later.

-EFAULT		Invalid address (no VMA or zero page).

-ENOMEM		Unable to allocate memory on target node.

-EIO		Unable to write back page. The page must be written
		back in order to move it since the page is dirty and the
		filesystem does not provide a migration function that
		would allow the moving of dirty pages.

-EINVAL		A dirty page cannot be moved. The filesystem does not provide
		a migration function and has no ability to write back pages.

The flags parameter indicates what types of pages to move:

MPOL_MF_MOVE	Move pages that are only mapped by the process.

MPOL_MF_MOVE_ALL Also move pages that are mapped by multiple processes.
		Requires sufficient capabilities.

Possible return codes from move_pages()

-ENOENT		No pages found that would require moving. All pages
		are either already on the target node, not present, had an
		invalid address or could not be moved because they were
		mapped by multiple processes.

-EINVAL		Flags other than MPOL_MF_MOVE(_ALL) specified or an attempt
		to migrate pages in a kernel thread.

-EPERM		MPOL_MF_MOVE_ALL specified without sufficient priviledges.
		or an attempt to move a process belonging to another user.

-EACCES		One of the target nodes is not allowed by the current cpuset.

-ENODEV		One of the target nodes is not online.

-ESRCH		Process does not exist.

-E2BIG		Too many pages to move.

-ENOMEM		Not enough memory to allocate control array.

-EFAULT		Parameters could not be accessed.

A test program for move_pages() may be found with the patches
on ftp.kernel.org:/pub/linux/kernel/people/christoph/pmig/patches-2.6.17-rc4-mm3

From: Christoph Lameter <clameter@sgi.com>

  Detailed results for sys_move_pages()

  Pass a pointer to an integer to get_new_page() that may be used to
  indicate where the completion status of a migration operation should be
  placed.  This allows sys_move_pags() to report back exactly what happened to
  each page.

  Wish there would be a better way to do this. Looks a bit hacky.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Jes Sorensen <jes@trained-monkey.org>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: Andi Kleen <ak@muc.de>
Cc: Michael Kerrisk <mtk-manpages@gmx.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-23 07:42:53 -07:00
Linus Torvalds 6c763eb9ea Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6: (27 commits)
  [PATCH] PCI: nVidia quirk to make AER PCI-E extended capability visible
  [PATCH] PCI: fix issues with extended conf space when MMCONFIG disabled because of e820
  [PATCH] PCI: Bus Parity Status sysfs interface
  [PATCH] PCI: fix memory leak in MMCONFIG error path
  [PATCH] PCI: fix error with pci_get_device() call in the mpc85xx driver
  [PATCH] PCI: MSI-K8T-Neo2-Fir: run only where needed
  [PATCH] PCI: fix race with pci_walk_bus and pci_destroy_dev
  [PATCH] PCI: clean up pci documentation to be more specific
  [PATCH] PCI: remove unneeded msi code
  [PATCH] PCI: don't move ioapics below PCI bridge
  [PATCH] PCI: cleanup unused variable about msi driver
  [PATCH] PCI: disable msi mode in pci_disable_device
  [PATCH] PCI: Allow MSI to work on kexec kernel
  [PATCH] PCI: AMD 8131 MSI quirk called too late, bus_flags not inherited ?
  [PATCH] PCI: Move various PCI IDs to header file
  [PATCH] PCI Bus Parity Status-broken hardware attribute, EDAC foundation
  [PATCH] PCI: i386/x86_84: disable PCI resource decode on device disable
  [PATCH] PCI ACPI: Rename the functions to avoid multiple instances.
  [PATCH] PCI: don't enable device if already enabled
  [PATCH] PCI: Add a "enable" sysfs attribute to the pci devices to allow userspace (Xorg) to enable devices without doing foul direct access
  ...
2006-06-22 15:07:59 -07:00
Bjorn Helgaas 4f1bcaf094 [PATCH] vgacon: make VGA_MAP_MEM take size, remove extra use
VGA_MAP_MEM translates to ioremap() on some architectures.  It makes sense
to do this to vga_vram_base, because we're going to access memory between
vga_vram_base and vga_vram_end.

But it doesn't really make sense to map starting at vga_vram_end, because
we aren't going to access memory starting there.  On ia64, which always has
to be different, ioremapping vga_vram_end gives you something completely
incompatible with ioremapped vga_vram_start, so vga_vram_size ends up being
nonsense.

As a bonus, we often know the size up front, so we can use ioremap()
correctly, rather than giving it a zero size.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-22 15:05:58 -07:00
Tony Luck 1323523f50 Pull rework-memory-attribute-aliasing into release branch 2006-06-21 14:50:10 -07:00
Keith Owens d270acbc24 [IA64] Sanitize assembler code for ia64_sal_os_state
struct ia64_sal_os_state has three semi-independent sections.  The code
in mca_asm.S assumes that these three sections are contiguous, which
makes it very awkward to add new data to this structure.  Remove the
assumption that the sections are contiguous.  Define a macro to shorten
references to offsets in ia64_sal_os_state.

This patch does not change the way that the code behaves.  It just
makes it easier to update the code in future and to add fields to
ia64_sal_os_state when debugging the MCA/INIT handlers.

Signed-off-by: Keith Owens <kaos@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-06-21 14:44:26 -07:00
Russ Anderson ea95972f18 [IA64-SGI] Remove SN SAL error handling feature bit that is no longer needed
Due to improvements in linux & SAL MCA handling, the
SAL_ERR_FEAT_MCA_SLV_TO_OS_INIT_SLV error handling features bit
is no longer needed.

Signed-off-by: Russ Anderson (rja@sgi.com)
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-06-21 14:39:41 -07:00
Mark Maule 83821d3f55 [PATCH] PCI: altix: msi support
MSI callouts for altix.  Involves a fair amount of code reorg in sn irq.c
code as well as adding some extensions to the altix PCI provider abstaction.

Signed-off-by: Mark Maule <maule@sgi.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-21 11:59:59 -07:00
Mark Maule 10083072bf [PATCH] PCI: per-platform IA64_{FIRST,LAST}_DEVICE_VECTOR definitions
Abstract IA64_FIRST_DEVICE_VECTOR/IA64_LAST_DEVICE_VECTOR since SN platforms
use a subset of the IA64 range.  Implement this by making the above macros
global variables which the platform can override in it setup code.

Also add a reserve_irq_vector() routine used by SN to mark a vector's as
in-use when that weren't allocated through assign_irq_vector().

Signed-off-by: Mark Maule <maule@sgi.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-21 11:59:59 -07:00
Mark Maule fd58e55fcf [PATCH] PCI: msi abstractions and support for altix
Abstract portions of the MSI core for platforms that do not use standard
APIC interrupt controllers.  This is implemented through a new arch-specific
msi setup routine, and a set of msi ops which can be set on a per platform
basis.

Signed-off-by: Mark Maule <maule@sgi.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-21 11:59:58 -07:00
David Mosberger-Tang 2ab561a116 [IA64] esi-support
Add support for making ESI calls [1].  ESI stands for "Extensible SAL
specification" and is basically a way for invoking firmware
subroutines which are identified by a GUID.  I don't know whether ESI
is used by vendors other than HP (if you do, please let me know) but
as firmware "backdoors" go, this seems one of the cleaner methods, so
it seems reasonable to support it, even though I'm not aware of any
publicly documented ESI calls.  I'd have liked to make the ESI module
completely stand-alone, but unfortunately that is not easily (or not
at all) possible because in order to make ESI calls in physical mode,
a small stub similar to the EFI stub is needed in the kernel proper.
I did try to create a stub that would work in user-level, but it
quickly got ugly beyond recognition (e.g., the stub had to make
assumptions about how the module-loader generated call-stubs work) and
I didn't even get it to work (that's probably fixable, but I didn't
bother because I concluded it was too ugly anyhow).  While it's not
terribly elegant to have kernel code which isn't actively used in the
kernel proper, I think it might be worth making an exception here for
two reasons: the code is trivially small (all that's really needed is
esi_stub.S) and by including it in the normal kernel distro, it might
encourage other OEMs to also use ESI, which I think would be far
better than each inventing their own firmware "backdoor".

The code was originally written by Alex.  I just massaged and packaged
it a bit (and perhaps messed up some things along the way...).

Changes since first version of patch that was posted to mailing list:
* Export ia64_esi_call and ia64_esi_call_phys() as GPL symbols.
* Disallow building esi.c as a module for now.  Building as a module
  would currently lead to an unresolved reference to "sal_lock" on SMP kernels
  because that symbol doesn't get exported.
* Export esi_call_phys() only if ESI is enabled.
* Remove internal stuff from esi.h and add a "proc_type" argument to
  ia64_esi_call() such that serialization-requirements can be expressed (ESI
  follows SAL here, where procedure calls may have to be serialized, are
  MP-safe, or MP-safe andr reentrant).

[1] h21007.www2.hp.com/dspp/tech/tech_TechDocumentDetailPage_IDX/1,1701,919,00.html

Signed-off-by: David Mosberger <David.Mosberger@acm.org>
Signed-off-by: Alex Williamson <alex.williamson@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-06-21 11:19:22 -07:00
David Woodhouse dc901d6d25 Add Kbuild file for IA64 'make headers_install'
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-06-18 12:22:20 +01:00
Tony Luck 76d08bb3f0 [IA64] Add "model name" to /proc/cpuinfo
Linux ia64 port tried to decode the processor family number
to something human-readable, but Intel brandnames don't change
synchronously with updates to the family number.  Adopt a more
i386-like approach and just print the family number in decimal.
Add a new field "model name" that uses PAL_BRAND_INFO to find
the official name for the cpu, or on older systems, falls back
to using the well-known codenames (Merced, McKinley, Madison).

Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-06-05 13:54:14 -07:00
David Woodhouse 66643de455 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:

	include/asm-powerpc/unistd.h
	include/asm-sparc/unistd.h
	include/asm-sparc64/unistd.h

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-05-24 09:22:21 +01:00
Bjorn Helgaas 32e62c636a [IA64] rework memory attribute aliasing
This closes a couple holes in our attribute aliasing avoidance scheme:

  - The current kernel fails mmaps of some /dev/mem MMIO regions because
    they don't appear in the EFI memory map.  This keeps X from working
    on the Intel Tiger box.

  - The current kernel allows UC mmap of the 0-1MB region of
    /sys/.../legacy_mem even when the chipset doesn't support UC
    access.  This causes an MCA when starting X on HP rx7620 and rx8620
    boxes in the default configuration.

There's more detail in the Documentation/ia64/aliasing.txt file this
adds, but the general idea is that if a region might be covered by
a granule-sized kernel identity mapping, any access via /dev/mem or
mmap must use the same attribute as the identity mapping.

Otherwise, we fall back to using an attribute that is supported
according to the EFI memory map, or to using UC if the EFI memory
map doesn't mention the region.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-05-08 16:32:05 -07:00
Jon Mason 913ed41eb5 [IA64] remove asm-ia64/bitops.h self-inclusion
asm-ia64/bitops.h includes itself.  The #ifndef _ASM_IA64_BITOPS_H
prevents this from being an issue, but it should still be removed.

Signed-off-by: Jon Mason <jdmason@us.ibm.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-05-05 11:37:15 -07:00
David Woodhouse d6754b401a Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2006-04-29 01:42:26 +01:00
Linus Torvalds 37e53db8aa Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] update sn2 defconfig
  [IA64] Add mca recovery failure messages
  [IA64-SGI] fix SGI Altix tioce_reserve_m32() bug
  [IA64] enable dumps to capture second page of kernel stack
  [IA64-SGI] - Reduce overhead of reading sn_topology
  [IA64-SGI] - Fix discover of nearest cpu node to IO node
  [IA64] IOC4 config option ordering
  [IA64] Setup an IA64 specific reclaim distance
  [IA64] eliminate compile time warnings
  [IA64] eliminate compile time warnings
  [IA64-SGI] SN SAL call to inject memory errors
  [IA64] - Fix MAX_PXM_DOMAINS for systems with > 256 nodes
  [IA64] Remove unused variable in sn_sal.h
  [IA64] Remove redundant NULL checks before kfree
  [IA64] wire up compat_sys_adjtimex()
2006-04-27 17:01:37 -07:00
Cliff Wickman 1df57c0c21 [IA64] enable dumps to capture second page of kernel stack
In SLES10 (2.6.16) crash dumping (in my experience, LKCD) is unable to
capture the second page of the 2-page task/stack allocation.
This is particularly troublesome for dump analysis, as the stack traceback
cannot be done.
  (A similar convention is probably needed throughout the kernel to make
   kernel multi-page allocations detectable for dumping)

Multi-page kernel allocations are represented by the single page structure
associated with the first page of the allocation.  The page structures
associated with the other pages are unintialized.

If the dumper is selecting only kernel pages it has no way to identify
any but the first page of the allocation.

The fix is to make the task/stack allocation a compound page.

Signed-off-by: Cliff Wickman <cpw@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-04-27 14:31:16 -07:00
Jack Steiner f0fe253c47 [IA64-SGI] - Fix discover of nearest cpu node to IO node
Fix a bug that causes discovery of the nearest node/cpu to
a TIO (IO node) to fail.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-04-27 14:28:37 -07:00
David Woodhouse 62c4f0a2d5 Don't include linux/config.h from anywhere else in include/
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-04-26 12:56:16 +01:00
Jens Axboe 912d35f867 [PATCH] Add support for the sys_vmsplice syscall
sys_splice() moves data to/from pipes with a file input/output. sys_vmsplice()
moves data to a pipe, with the input being a user address range instead.

This uses an approach suggested by Linus, where we can hold partial ranges
inside the pages[] map. Hopefully this will be useful for network
receive support as well.

Signed-off-by: Jens Axboe <axboe@suse.de>
2006-04-26 10:59:21 +02:00
Christoph Lameter e5ecc192df [IA64] Setup an IA64 specific reclaim distance
RECLAIM_DISTANCE is checked on bootup against the SLIT table distances.
Zone reclaim is important for system that have higher latencies but not for
systems that have multiple nodes on one motherboard and therefore low latencies.

We found that on motherboard latencies are typically 1 to 1.4 of local memory
access speed whereas multinode systems which benefit from zone reclaim have
usually more than 1.5 times the latency of a local access.

Set the reclaim distance for IA64 to 1.5 times.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-04-21 10:57:40 -07:00
Satoru Takeuchi a72391e42f [IA64] eliminate compile time warnings
This patch removes following compile time warnings:

drivers/pci/pci-sysfs.c: In function `pci_read_legacy_io':
drivers/pci/pci-sysfs.c:257: warning: implicit declaration of function `ia64_pci_legacy_read'
drivers/pci/pci-sysfs.c: In function `pci_write_legacy_io':
drivers/pci/pci-sysfs.c:280: warning: implicit declaration of function `ia64_pci_legacy_write'

It also fixes wrong definition of ia64_pci_legacy_write (type of `bus' is not
`pci_dev', but `pci_bus').

Signed-Off-By: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-04-20 17:06:54 -07:00
Russ Anderson 86db2f4239 [IA64-SGI] SN SAL call to inject memory errors
The SGI Altix SAL provides an interface for modifying
the ECC on memory to create memory errors.  The SAL call
can be used to inject memory errors for testing MCA recovery
code.

Signed-off-by: Russ Anderson (rja@sgi.com)
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-04-20 17:05:43 -07:00
Jack Steiner 0d9adec525 [IA64] - Fix MAX_PXM_DOMAINS for systems with > 256 nodes
Correctly size the PXM-related arrays for systems that have more than
256 nodes.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-04-20 10:16:11 -07:00
Russ Anderson 308a878210 [IA64] Remove unused variable in sn_sal.h
cnodeid was being set but not used.  The dead code was
left over from a previous version that grabbed a per node lock.

Signed-off-by: Russ Anderson (rja@sgi.com)
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-04-20 10:14:56 -07:00
Jens Axboe 70524490ee [PATCH] splice: add support for sys_tee()
Basically an in-kernel implementation of tee, which uses splice and the
pipe buffers as an intelligent way to pass data around by reference.

Where the user space tee consumes the input and produces a stdout and
file output, this syscall merely duplicates the data inside a pipe to
another pipe. No data is copied, the output just grabs a reference to the
input pipe data.

Signed-off-by: Jens Axboe <axboe@suse.de>
2006-04-11 15:51:17 +02:00
Linus Torvalds b3967dc566 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] Prefetch mmap_sem in ia64_do_page_fault()
  [IA64] Failure to resume after INIT in user space
  [IA64] Pass more data to the MCA/INIT notify_die hooks
  [IA64] always map VGA framebuffer UC, even if it supports WB
  [IA64] fix bug in ia64 __mutex_fastpath_trylock
  [IA64] for_each_possible_cpu: ia64
  [IA64] update HP CSR space discovery via ACPI
  [IA64] Wire up new syscalls {set,get}_robust_list
  [IA64] 'msg' may be used uninitialized in xpc_initiate_allocate()
  [IA64] Wire up new syscall sync_file_range()
2006-04-11 06:40:17 -07:00
Yasunori Goto c80d79d746 [PATCH] Configurable NODES_SHIFT
Current implementations define NODES_SHIFT in include/asm-xxx/numnodes.h for
each arch.  Its definition is sometimes configurable.  Indeed, ia64 defines 5
NODES_SHIFT values in the current git tree.  But it looks a bit messy.

SGI-SN2(ia64) system requires 1024 nodes, and the number of nodes already has
been changeable by config.  Suitable node's number may be changed in the
future even if it is other architecture.  So, I wrote configurable node's
number.

This patch set defines just default value for each arch which needs multi
nodes except ia64.  But, it is easy to change to configurable if necessary.

On ia64 the number of nodes can be already configured in generic ia64 and SN2
config.  But, NODES_SHIFT is defined for DIG64 and HP'S machine too.  So, I
changed it so that all platforms can be configured via CONFIG_NODES_SHIFT.  It
would be simpler.

See also: http://marc.theaimsgroup.com/?l=linux-kernel&m=114358010523896&w=2

Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Andi Kleen <ak@muc.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-04-11 06:18:39 -07:00
Keith Owens 958b166c00 [IA64] Pass more data to the MCA/INIT notify_die hooks
The MCA/INIT handlers maintain important state in the SAL to OS (sos)
area and in the monarch_cpu flag.  Kernel debuggers (such as KDB) need
this data, and may need to adjust the monarch_cpu field so make the
data available to the notify_die hooks.  Define two more events for
calling the functions on the notify_die chain.

Signed-off-by: Keith Owens <kaos@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-04-07 22:51:51 -07:00
Bjorn Helgaas 2db8d99ffd [IA64] always map VGA framebuffer UC, even if it supports WB
EFI on some machines, e.g., Intel Tiger, reports that the VGA framebuffer
supports WB access.  ioremap() prefers WB when possible, so it can work
when mapping main memory.

But it doesn't make sense to map a framebuffer WB, because the driver
doesn't flush explicitly, so updates won't make it to the device
immediately.

This is due to Zou Nan hai <nanhai.zou@intel.com>.

More extensive fix that adds a "size" argument coming soon.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-04-07 22:47:12 -07:00
Chen, Kenneth W cfab9d0e1d [IA64] fix bug in ia64 __mutex_fastpath_trylock
The parenthesis around "likely" used in ia64 __mutex_fastpath_trylock
is incorrect, and it leads to broken mutex_trylock.  Here is the
patch that fixed the bug.  I removed the likely altogether because
there is no branch and gcc does a reasonable job at predicating the
return value.

Signed-off-by: Ken Chen <kenneth.w.chen@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-04-07 22:39:49 -07:00
Bjorn Helgaas 03fbaca36a [IA64] update HP CSR space discovery via ACPI
Get rid of the manual search of _CRS, in favor of
acpi_get_vendor_resource() which is now provided by the ACPI CA.  And fall
back to searching for a consumer-only address space descriptor if no
vendor-defined resource is found.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-04-06 14:42:38 -07:00
Tony Luck b8cd2af862 [IA64] Wire up new syscalls {set,get}_robust_list
Join the dots to enable Ingo's robut futex syscalls.

Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-04-06 14:20:16 -07:00
Tony Luck d905b00b3b [IA64] Wire up new syscall sync_file_range()
Also reserve syscall numbers for {set,get}_robust_list

Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-04-04 14:08:11 -07:00
Tony Luck 2ab9391dea [IA64] Avoid "u64 foo : 32;" for gcc3 vs. gcc4 compatibility
gcc3 thinks that a 32-bit field of a u64 type is itself a u64, so
should be printed with "%ld".  gcc4 thinks it needs just "%d".
Make both versions happy by avoiding this construct.

Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-03-31 10:28:29 -08:00
Zhang, Yanmin f19180056e [IA64] Export cpu cache info by sysfs
The patch exports 8 attributes of cpu cache info under
/sys/devices/system/cpu/cpuX/cache/indexX:
1) level
2) type
3) coherency_line_size
4) ways_of_associativity
5) size
6) shared_cpu_map
7) attributes
8) number_of_sets: number_of_sets=size/ways_of_associativity/coherency_line_size.

Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-03-30 17:14:12 -08:00